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Design, synthesis, and biological evaluation of new 12-substituted-14-deoxy-andrographolide derivatives as apoptosis inducers

Sai Giridhar Sarma Kandanur, Somanath Kundu, Christian Cadena, Homero San Juan, Avinash Bajaj, Juan David Guzman, Srinivas Nanduri, and Nageswara Rao Golakoti

Sri Sathya Sai Institute of Higher Learning, Prasanthi Nilayam Campus, Anantapur, India

 

E-mail: gnageswararao@sssihl.edu.in

Abstract: Andrographolide (1), the major labdane diterpenoidal constituent of Andrographis paniculata Wall, has been found to be majorly responsible for the medicinal uses of the plant particularly anti-cancer properties. In our previous work, we have found 3,19-diacetyl-12-phenylthio-14-deoxy-andrographolide (3g), a semi-synthetic derivative of Andrographolide to be one of the most potent compounds exhibiting cytotoxic activity against a number of human cancer cell lines particularly HCT-116 cell line. In this work, we report the effect of 3g on cell cycle arrest and its apoptosis inducing potential on HCT-116 cell line. In addition, we also report the synthesis of some new 3,19-diacetyl-C-12-substituted-14-deoxy-andrographolide derivatives 3a–f, their cytotoxic effects on colon cancer cells (HCT-116), and the mechanistic studies of the active analogue 3c. Encouragingly, we have also found that the compounds 3c and 3g were observed to be non-toxic (IC50 > 250 μM) to baby hamster kidney (BHK-21) normal cells.

Keywords: 3,19-diacetyl-C-12-substituted-14-deoxy-andrographolides ; Anti-cancer activity ; Apoptosis inducer ; Cell cycle arrest ; HCT-116 cell line 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-019-00718-9

 

Chemical Papers 73 (7) 1669–1675 (2019)

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